Radiator cap



April 2, 1929- l. l.. woLKow 1,707,338

RADIATOR CAP Filed Jan. 10. 1922 @@QMM Patented Apr. 2, `1929.

nire srrrs RADIATOR CAE.

Application Filed January 1G, 19m. `Serial No. 525mm in the oos or the csp by theft.

r o Aer object resides in iorining the cap so thetit may han s temperature indicator or nuotorinoteri secured thereto, ineens being` provided to prevent the removal oi. the indicator :titer it has been secured in place.

A. linrther object consists in forming the oep with e hinged section or cover edepted to be swung to allow i'or the fillingl of the redistor end providing); ineens tor securing the hinged section against swinging movement when it is not necessary to lill theredietor.

It, still 'turther object residesin theprovision ot ineens whereby the csp may be removed, it 'dof-initrd, when the radiator hes been removed troni` the uutoinobile, such Y removal ot the csp being allowed only when the posi? tion oi" the rsdietor is reversed or in other words when therediator `is turned upsidedown. i

llifith the shove end other objects in view, which will emisor es the description proceeds, inv invention consists in the novel details ol (obstruction und arrangement ot parte der rlbed in thel'ollowin speeiiieution and illu. 'ted in the :icconipmiying drewingsnd while l lieve `illustrzrted and described 'the preferred embodiments oi the invention it will be understood that such chenges iney be inede :is will tell within the scope of the ep`V pen'dedcleinis.

lin the 'drawings Fig. l is e. front elevation.

Q is e, ilfreginental transverse vertical section.

lfio' $3 is :L top plain oi' the bese portion. Fig. l is :L bottom plan of the hinged portion or cover. Y l

Fig. 5 is :t side elevation oi the lool-:ing rii os'in seperated position.

is e side eleve-.tion o1 the locking rin itc f sleeve. i i

. i' is n bottoni plan of the upper lock- ,o-clringg' position for scrc-rwing` onto the Fie: 8 is e top plen of the lower locking 1.3. 9 is e transverse vertical section through the bese with portions reversed for enterioriy threaded sleeve, surrounding` the i lilling opening` oi? the radiator, to which my improved toi-in oi? cepis adapted to be secured. rlfhe csp comprises e bese 2 to which e` cover 3 is hingedly connected by the pin (l, the cover having e recess 5 extending from the lower end to receive the stein 6 of a temperature indicator or niotornieter 7 ofany ot the well known constructions. The stein G is enteriorly threaded end receives the wz eher 8, the securing nut` 9, and the lock nut 1.0, the washer ond nutsbeingreceive'd in the recess 5 es quit e clearly shown in Fig. 2 of the drawings. lo prevent access to the securing ineens-,f` ior ibo tonjrpersture indicator I secure it. pieta-1 ll. to the lower end ofthe cover by ineens oit' thescrews l2, the plate having :L contrai opening` through which the endoii the stein passes. The edge of the opening in the pletejis formed with the circuniferentielly spaced `inwardly extending?)` projections 13 which entend into close proximity to the stem thereby preventing the insertion of tools or the fingers for removing the securing` means on 'the stein. 4 the sen'ieltiniethe projections being; :Ipsced spurt allow for circnletion oi? tbe heet or other elements so as to not interiifjore withthe ready operation of the iudicottor;` ln the forni of cover illustrated in Fig. l laterally extending arms or wings lli are provided and may be used for turning the entire cap for connecting the seine to the radiator sleeve in e manner to be later described. In Fig; l0, of the drawings, I have illustrated the` insnner of securing the plate ll to the cover7 the cover being shown in reversed position to :more readily adapt the securing` of the plsiein position. The securing screws 'l2 will preferably be provided with the specedfhoeds l5, the outer heedheving e. slot ior the insertion of e screw driver or similar-tool. llihen the screw is inserted to its greatest extent the upperlieed 15 will breek oiist the reduced portion 16 and the lower head will be received in the recess 17 in the lower fece of the plete. lVben the upper head is broken oii' Vit will be impossible to remove the screws as the lower head Which is receivedy in the. recess 17 has no slot or 'similar openings for the insertion of removing tools.

The base Qais provided interiorly with t-he shoulders 18 and 19, the shonlder 18 forming a seat for rotatablysupporting the ring 20 f thei-nterior-'threads of rsaid sleeve or flange `beingv adaptedto engagethe' threaded sleeve rthi-ihblewhich surrounds the radiator tillingopening. The ring 21 is provided on its to belaterdescrrbed- 'iin'deiface with' the ratchet teeth 25 which, W en the two ring-s are in position, overlie M l*adapted to engage the teethV 23 on the ring 20L i The ring 21 is also provided with anl inclined recess Q7 foi-ming the tooth 28 forv a purpose to be'later described; VThe ring E20Y is provided with a recess 29 to receive, when tll ipr is attached in its operative positioin'af pv 30, said pin 30 adapted to tall into tli'er'ecess 27, and engage the tooth 28, of the-ring 21, wlienthe radiator is removed `tromthe automobile and its position reversed. this pin- 3'() wil-ibeiised for removing the cap from the radiator, when desired, in aV manner formed in the under tace off' the cover:

f *As isv quite clearly'shown i'n Figs. 2 and V9. the ring 20 has a littlev playbetween the shotild'ei 18a/iid the i'iiig'QO. A packing ring 3i wil* he received on the ring 20 to form a tight -fitg' to prevent rattling between the base and cover., l A

Having fully described the detail construe'- 'tion-,I "will new endeavor to bring out fully the ancl'niode of operation. vIt is afY wen ,knwn tact tliateaeh year 'a large nninleefoff automobile radiator caps and tem'- 'pe'ratnre -indicators "or niotormeters are Y stelen 'fdne t'o they fact-that ordinarily'the caps either with or without theltemperature indieaterare merely screwed upon the sleeve or tliitnble stir-rounding the filling opening of Y the and they can be easily nnscrewed ahdftakenLaw-ay. Y Ashas been stated in the objects of myy invention- Iintend to provide a radiator cap which may be easily attached to the filling opening but cannot be detached without reversing the position ofthe radiator or in other words turn the radiator upsidedown. At the same time the temperature indicator or motormetci is so attached to the cap as to prevent its removal after it has once been secured in position. The ring 21 is .secured to the base E3 by the screws 22 and there- Jfore becon'ies a part ol the base and is adapted to operate therewith at all times. lhe ring 20 whose extension 24 is interiorly threaded is adapted for rotatable movement with res spc'ct to the base and will only turn with the base when turning or screwing on to the lil.- ing opening thimble. In screwing the cap into position the teeth ot the ring` 2l will 'engage the teeth 23 ot' the ring 2O and thereby rotate the ring 20 as a part ot the cap and rscrew the same on to the radiator sleeve.

Should an attempt be made to unscrew the cap the base 2 with the ring 21 will rotate iiree from the ring 2U, the teeth 25 of the ring Q1A being allowed to ride over the teeth 23 of the ring 2O due to the play lett between the ring 21 and shoulder 18 of the base i'or the ring 20; It will therefore be seen that ab thongh the base 2 may be rotated in a direction supposedly to nnscrew the cap from the radiator never-the-less the ring 2O with the threaded extension will not be unscrcwed and therefore the nip cannot be removed 'troni the radiator. The only way in which the cap may be removed is, as previously described, by taking the radiator oit of the automobile andy tuiningthe same upsidedown. The pin 30 is normally entirely received within the opening or recess 29 of the ring 20 but when the radiator is tnrned upsidcdown a portion of the said pin 30 will drop into the recess Q7 of the ring 21 andy engage the shoulder 28. The shoulder 28 being in reverse position to the teeth 25 will, when the pin 8O engages the shoulder 28 allow the ring 2O to be turned with the base and the ring 21 carried thereby, thereby 'unscrewing said ring and its threaded extension 24 from the radiator sleeve and allowing the cap to be removed. In order that the radiator maybe readily filled, when i'ie'cessary, I prov-ide the hinged cover pivotally connected to the base and securedA in close position by the screw 31; llVhen it is desired to till the radiator the knob 32 is turned so that the screw 31 will be withdrawn from the threaded opening in the base into the recess 33 and the cover can then be swung npe'n its pivot point 4 and the radiator filled. In order to prevent the stealing of the telnperatnre indicator or motormetci I have provided the plate 11, having the inwardly extending projections 13. which is secured over the end ot' the recess 5, in the cover, and prevents any one from inserting their lingers or tools for removing the nnts 9 and 10 which secure said temperature indicator to the cap.

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At the same time the inwardly extending projections 13 being circui'nterentially spaced there is nothing to prevent the ready circulation ot heat to the temperature indicator' stem and therefore the operation is not impaired in any manner. The cap as a whole may be screwed. into position by using the laterally uitzending wings or projections la as a handle or lever, although it will be understood that said projections or wings tornino particular part oit the present :invention and any other suitable design of cover may be equally as well used. As previously stated after the screws 22, which secure the ring 2l to the base 2, have been driven home the ends are tiled oli' so that they cannot be removed. The screws l2, which secure the plate 11, to the cover, preterably of the construction shown and described whereby when they are driven home the upper head, containing the slot, will be broken oli so that the screws cannot be removed.

Having fully described my invention what I claim as new and 'desire to secure by Letters Patent is:

l. In combination witha radiator having a threaded sleevearound the filling opening,

a radiator cap, said cap comprising a base, a threaded ring rotatably carried by the base and adapted to engage the sleeve, saidring having teeth thereon, a toothed ring rigidly connected to the base and adapted to engage the teeth of the rotatable ring for screwing said ring onto the sleeve but preventing rotation in the opposite direction, a pin normally carried within the rotatable ring but adapted upon reversal of the position ot the radiator to engage the teeth of the rigidly connected ring to allow iniscrewing of the cap trom the sleeve, and a cover connected to the base. i

2. In combination, a closure for a radiator lilling opening, means including two collarsl one litting around the other for connecting said closure to said radiator but permitting a limited opening movement thereot, said means being releasable :from said radiator onlywhen said radiator is in abnormal posi* tion, a slidable pin being associated with said means.

In testimony whereof I hereunto ailix my signature.

ISAAC LEO WOLKOW. 

